问题补充：
—Why do you always lie to our mother you love her cooking?
—Its only a white lie, so ．
A. don bother
B. my pleasure
C. its no big deal
D. mention it
答案：
A. don bother
B. my pleasure
(答案→)C. its no big deal
D. mention it
解析：考查句子意思，its no big deal意思“这没什么大不了的”，my pleasure意思“愿意为您效劳”，用作对谢意的客气回答，由前面的句子Its only a white lie那只是无恶意的谎话，可以知道选C，句子意思“那只是无恶意的谎话，这没什么大不了的”，
